CTICasesCavitary Coccidioidomycosis
Imaging findings
Chest CT shows a large cavitary nodule in the left lung containing gravity-defying necrotic debris mimicking a fungus ball, and a dense consolidation (pneumonia) in the contralateral right upper lobe. Biopsy/cultures proved coccidioidomycosis.
Key takeaways
Coccidioidomycosis can present as a chronic cavitary lesion. Necrotic lung tissue within the cavity can mimic a gravity-dependent fungus ball (mycetoma) but represents necrotic parenchymal debris rather than Aspergillus colonization.
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